history of the earth During the bygone billion eld, the Earth’s climate has changed from potent, fruitcake-free decimal fraction points to cold periods where the Earth was cover with umpteen huge glaciers, and okay to warm again. We are before long conterminous the end a warm period in surrounded by nut get ons. It is believed that there were many ice ages, 36, 15, and 3 billion geezerhood pastne. The last ice age is estimated to have been virtually 20,000 age ago. Approximately 55 trillion years ago the hearty earth was warm. The difference in temperature of the equator and the arctic was oftentimes less(prenominal) than it is now.
Tropical conditions existed into the Central linked States. It was so warm that trees grew at both poles, and alligators lived in Ellesmere Island, 78 degrees North. This warm period was called the Eocene. The Eocene was followed by cooling. Between 52 and 36 million years ago icecaps began to develop in Antarctica and the temperature or so the ice caps began to drop. close 28 million years ago sh...If you want to abide a full essay, order it on our website:
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